Asynchronous Serial Communications Programmer's Reference Manual (32022-90052)

Chapter 8 183
Intrinsics Reference
FCONTROL(25)
Condition Codes
CCE Request granted.
CCG Not returned by this intrinsic.
CCL Request failed because the file number specified did not
belong to this process or the device is not a terminal.
Additional Discussion
See FCONTROL(41) and FDEVICECONTROL in this manual.